Edge-finishing machine.



P. R. GLASS.

EDGE PINISHING MACHINE;

APPLIGATION FILED MAY 15, 1913.

Patented Jul)T 7, 1914.

3 SHEETS-SHEET 1.

P. R. GLASS. EDGEv PINISHING MACHINE. I

APPLICATION FILED MAY l5, 1913.

Patented July 7 P. R. GLASS.

EDGE FINISHING MACHINE.

APPLICATION FILED MAY 15, 1913.

1,102,495. Patented July 7, 1914.

3 SHEETS-SHEET 3.

la//r/QESSTES m w; Q @ma PERL'EY R. GLASS, OF BROOKLINE, MASSACHUSETTS, ASSIG'NOR TO P. R. GLASS COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

EDGE-FINIsHING MACHINE. j

Specicaton ofk Letters Patent.

Application filed May 15, 1913. Serial No. 767,756.

T o all whom it may concern Be it known that I, PERLEY R. GLASS, a citizen of the United States, residing at Brookline, in the county of Norfolk and Stateof Massachusetts, have invented certain ,Improvements in Edge-Finishing Machines, of which the following description, in connect-ionwith'the accompanying drawings, is a specification, like referen e characters on the drawings indicating lik parts in the several figures..

This invention relates to improvements in machines for finishing the edges of sheet material, and is illustrated in connection with the cementing and folding of the edges of parts of boots and shoes.

The invention contemplates the provision of a machine for finishing the edge of a closed vamp, by the use of which several opl erations which have heretofore been necessary are dispensed with, and the eXpenseof finishing the vamp is correspondingly reduce'd.

In the finishing of the edges of vamps of certain styles in the manufacture of boots and shoes it has heretofore been necessary to subject the vamp ,to six distinct operations; namely, cementing the edge, snipping the curved edge at the throat of the vamp, folding the edgento points within about one inch ofthe rear end, closing and staying the back seam, recementing and finally folding the remaining port-ion of the edge left unfolded adjacent to the back seam.

In accordance with the method disclosed in my co-pending application Serial No. 798,528,` filed October 31, 1913, lthe back seam is stayed and closedl before the folding operation, the vamp isthen cemented and the entire edge is progressively folded, the throat being simultaneously snipped during the folding operation. therefore, a second folding operation and the recementing operation are entirely obviated. The important advantages in this method over that formerly practised in economy of time will be obvious but even greater advantages to the system of manufacture result from the method of my invention.

Whereas formerly it was necessary to return the partially folded Vamps to the stitchers for closing the back seam and 'then' again send the closed and partially .folded Vamps to the folders, it is now possible to avoid such a piecemeal procedure.

By this method,

On this account nearly two days time will be saved in gettmg the work through the stitching room.

I have discovered that a closed vamp mayV be folded byV a machine having a projecting; or overhanging arm or post adapted to be passed through the opening of the vamp and havlng suitable folding instrumentalities 1ocated adjacent to the end of such projecting arm or post. An important feature of the invention accordingly consist-s in the provision broadly of a machine of this character.

An important feature consists in arranging the actuating connections of the folding instrumentalities withinthe projecting arm or 0st so that the operator will be enabled to eed a closed vamp freely upon all sides of the arm yand so present easily every portion of its edge to the action of the folding instrumentalities,

Any desired form of folding instrumentalities may` b e employed within thel scope of the present invention although it is believed those best adapted for this work are No. 725,881 the embodiment of such instru` mentalities in a machine having a projecting arm or post has necessitated many novel mechanlcal comblnatlons and arran ements of parts' which constitute further eatures of the invention.

A further important feature of the invention relates to the feeding mechanism which is herein shown as comprising a pair of jaws arranged for relative movement in a vertical vplane to complete the fold partially formed by the folder and creaser and to press or hammer the complete fold. In order to effect the feeding operation, these jaws are arranged for pivotal movement about an axis `within the arm, the axis about which the jaws are oscillated coinciding with that of'a reciprocating rod which is utilized to effect 'their approaching movement. This construction constitutes a compact and accurately working mechanism Well adapted to be contained within the relatively small arm which carries the folding inst-rumentalities.

rFliese and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment of the machine selected for purposes of illustration and shown in the accompanying drawings, in which,-

- Figure 1 is a view of the machine 1n side elevation; Fig. 2 is a view in perspective of the folder and the support with their operating mechanisms; Fig. 3.is a view in perspective of the creaser and feeding mechanism with their operating mechanisms; Figs. 4, 5 and 6 are detail views of various small parts of the machine; Fig. 7 is a view in side elevation of the arm which carries the folding instrumentalities; Fig. 8 is a View in perspective of the mechanism for operating the snipping knife; Fig. 9 shows a closed vamp partially cemented but unfolded; Fig. 10 shows a closed vamp being operated upon by the folding instrumentalities.

As herein shown, the' machine has a frame having a base portion 2, a top portion 4, and an outwardly extending arm 6. The

v baseportion contains the main driving shaft -ing operation.

S which is. provided outside of the frame with a driving pulley 10. Any 'suitable clutch' mechanism maybe interposed between the pulley Ll() andthe shaft 8 and for controlling this mechanism there is pivoted to the frame a treadle controlled shifting arm 12. The arm 6 projects outwardly from one vertical side wall of the top portion 4 of the frame and is made relatively .small in cross section in order that a closed vamp of even the smallestl size may befed around it easily. It will be seen that the arm 6 is entirely free and clear of'all other parts ofthe machine and that it isl located sutiiciently above the base of the frame to. 'support a vamp with its depending portion above the bench so that the vamp will not be dragged upon the bench during the fold- The folding instrumentalities are mounted on the arm 6 adjacent to its outer end and the operating connections to these instrumentalities are contained withinlthe arm, so that there is no danger of the connections catching upon or 'otherwise interfering with the work. At the lower side of the arm 6 is arranged a .sheet metal casing 7 which incloses the moving parts.

That portion of the work which is being folded rests upon the upper end of a supporting bar 30 which is yieldingly held in a position in which 'its end is substantially flush with the surface of the arm 6. The supporting bar 30 is connected at its lower end with a bent arm 32 secured to a shaft 34 journaled in suitable bearings in thearm 6 and in the'top portion 4 of the machine frame. At a point within the frame a finger lever 36 is secured tothe shaft 34 and extends outwardly through the frame and into convenient reach of the operator. Outside of the frame and above the lever 36 -is disposed a hollow boss 37 in which is located a spring plunger which normally bears upon the upper side of the lever 36 and so tends to rotate the shaft 34 in such direction as to hold the supporting bar 30 in its upper position. At its rear end the shaft 34 carries a short arm 38 to which is pivoted a vertically extending link 40V`piv.-V

Accordingly, when the shaft 8 is rotated the,

suppprting bar 30 will be intermittently depressed against the compression of the spring which bears on the lever 36. The purpose of this intermittent depression of the supporting bar 30 is to release the. work so that it may be fed, as will appear hereinafter.` The link 40 is connected to the arm 38 through a pin and slot so that the support 30 may be depressed manually by lifting the lever`36. The spring pressed plunger in the boss 37 normally maintains the connecting pin in contact with the upper end of the slot and so determines the upper position of the support,

Directly above the supporting bar 30 is located the creaser 50 which determines the fold line and over which the margin of the work is folded. The creaser is mounted in a bracket 44 on the upper side of the arm 6, being yieldingly held in engagement with the work in such a way as to permit movement outwardly and upwardly from the crease line in casea thick portion, such as a seam, is encountered in the work. -To this end a block 45 is pivoted to the bracket 44 by, means of a stud 46 and has secured to its front face a cover block 47 rlhe block 45 is normally held in a. vertical position by means of a spring pressed plunger 43 (see Fig. 5) which is disposed above the pivot stud 46 and yieldingly maintains the block moa-,free

to project at its forward end into a notch formed in the creaser slide 48. v

The edge of the material is turned over the creaser 50 by a folder 55. This member, as shown in Fig. 2, comprises a bar having a reduced end and being guided for reciprocation in an oblique path extending past the effective edge of the creaser. The folder is mounted inlinclined ways 54 formed in the arm 6, as shown in Fig. 7, and is pivotally connected at its lower end to a link 56. The link 56 is connected at its rear end to a rocker member 58 which is arranged to swing about the axis of a stud 60 set in one wall of the top portion 4 of the frame.

One arm of the rocker 58 is pivotally connected to a vertically extending link 62 which in turn is connected through anniversal joint to one branch of a forked eccentric arm 64 journaled on the shaft 9. The eccentric arm 64 is oscillated by a cam 16 on the shaft 8 and its movement is transmitted through the mechanism just described to the folder 55. The folder 55 and creaser 50 coperate to form the fold. The.,

jaw or hammer 66 is arranged to move for.-

wardly and downwardly to complete the partially formed fold and pressi the work against the lower jaw 67, and with the work gripped between them, both jaws are then arranged to swing away from the oreaser and folder, thus effecting the feeding operation.-

Thel arm 6 has formed in one side bearings for a hollow oscillating shaft 70, eX- tending from front,to rear and carrying at its forward end the lower jaw 67 which is secured thereto by the split boss r69. The up; per j aw 66 is pivotally mounted onl the stud 68 which is set in the lower jaw 67. At its lower end the upper jaw 66 is pivotally connected to a rod 71 which is arranged for reciprocation within the hollow shaft70. At its rear end the rod 71 is adjustably secured to a short arm 72 pivoted between the ears of astirrup melnber 73. The member 73 is journaled upon a pin 75 projecting inwardly from the frame 4 and also journaled upon the pin 75 v is a rocker member 80: The rocker member has a bent arm 77 which stands in the path of a spring pressed plunger 76 carried in the boss Aformed on the back of the stirrup member 73. The initial position ofthe member 73 with respect to the member is determined by an adjustable stop screw 78 against which the member 78 is held by the spring plunger 76. A screw 78 is set in an arm 74 on the rocker member 80 which is spaced from the bent arm 77. The effect of this arrangement is to provide a yielding connection between the rocker member-8O and the arm 72 on the shaft 71. This is desirable in order to allow for work of different thicknesses beneath the hammer 66. At its forward end the rocker member 80 is pivotally connected to a' vertically disposed link 82 which is pivoted at its lower end to an ear projecting from one branch of -a forked eccentric lever 84. The eccentric lever 84 is journaled upon the shaft 9 be,-

side the arm 64 and is oscillated vertically by a cam 18 on the shaft 8. When the arm 84 ,is swung downwardlyv its movement is transmitted in a yielding manner to the upper jaw 66 which is at this time moved yforwardly into engagement with the work.

Oscillation of the feeding jaws in a trans- 94 and a sliding block 97. The eccentric arm 99 is journaled upon the shaft 9 and oscillated by an eccentric 20 on the shaft 8. When the eccentric arm 99 is moved upwardly by the cam 20 the feeding jaws are swung away from the creaser and folder, thus feeding the work past them.

In order to vary the length of the feeding stepsprovision is made for varying the effective throw of the eccentric arm 99. To this end the arm is provided with a slot 96 in which the block 97 is adjustably held and a forked arm 98 is arranged adjacent tothe slot and in such position as to receive the outer end of the block 97. The arm 98 is connected at its lower end toa handle 104 which isprovided with a spring locking detent and extends outwardly through the machine frame within convenient reach of the operator. If it is desired to reduce the eX- tent of the feedingsteps the handle 104 is moved upwardly by the opera-tor and the block 97 therefore carried rearwardly toward the shaft 9 which constitutes the axis of the eccentric arm 99. The extent of the oscillation transmitted to the link 94 and `its connected mechanism is correspondingly yreduced and the feed shortened.

The work is snipped by a movable blade 120 and a fixed blade 142 which are located upon the opposite side of the folder from the feeding jaws 66 and .67 The movable blade is secured in a knife carrier arm 122 pivotally mounted upon the pin 124 in the outer end of the arm 6. They blade 120 is sharpened on its rear side and cuts when the knife carrier arm is swung downwardly and rearwardly, as seen in Fig. 1. This movement is effected through the link 1261 which is pivotally connected at its rear end to a rocker member 128 journaled on the pin 129 in the frame 2. -The rocker member 128 has secured to one side an arm 130V having a ball 132 at its forward end. The ball 132 is disposed in alinement between two cupped studs 39 and140 carried by a vertically reciprocatory frame 134. The frame 134 is reciprocated up and down by a cam 13G on the shaft 8 and, when so desired, its motion is transmitted to the shippingl knife through the cupped studs l139 and 140, the arm 130q and the connections above described. In the normal operation of the machine the lower stud 140 is allowed to move idly and no movement is imparted to the arm 130. When it ,is desired to oscillatethis member the stud 140 is locked in operative 'position in the frame 134. For this purpose guideways are provided in a loose stud set in the frame for a sliding cam bar 13S pivotally connected at its rear end to a treadle controlled bell crank lever 143. When 4the treadle rod is depressed the cam bar 138 is moved until its high part has lifted thel stud 140 intoA engagement with the ball 132 whereupon the movement of the sliding frame 134 is transmitted to the arm 130- and to the snipping knife. The pivotal connectionbetween the cam bar 138 and the treadle lever 143 and a pivotal mounting of the guideway in the slide 134 permit the necessary relative movement of the parts.

The stationary shear blade is formed in a hardened block 142 which is rigidly but adjustably secured to the arm 6 in the proper relation to the path of the movable blade 120. A portion of the block 142 is curved upwardly to form an edgebending guide or plow which acts to liftvor vslightly turn the edge of the work preliminar-ily to the actimi upon it of the folder 55. This, device also ara-sasd aWgage-to deter'ih the width of'theedge to be folded.

A yielding foot 150 is pivoted at one sidel of the 4knife carrier army 122 and arranged to overlie the plowvand guide the work smoothly over the latter, preventing it at the same time from being rolled over before` it reaches the folder. The foot 150 is main tainedl in its normal position by a leaf spring 152 which bears on vthe foot nearits front end.

Preparatory to the use of the machine of this invention a closed vamp, such as that shown in Fig. 9, is turned insideout and closed by the back seam 202.

cemented about its upper edge by hand orby a suitable cementing machine. The vamp. shown has a stayed side seam 20() and .is The cement 204 is allowed to become partially dried before the edge of the blank is folded. TheV folding operationmay be begun at any point in the edge to be folded and continued around the edge to the same point. Preferably a point at the rear of the vamp at one side of the back seam, such as that indicated by the arrow in Fig. 10, is selected and the folding operation progresses toward. the throat of the vamp, around the throat, rearwardly to the back seam, and back to the starting point.

In carrying out the folding operation by the aid of the machine hereinabove described, the vamp is placed over the arm 6 with the point to be first folded over the support 30 and above the end of the folder whereupon the folder 55 is advanced to fold a short portion of the margin over the'edge of the creaser 50. The support 30 is then momentarily depressed and the work 'fed along so that the partially formed fold is brought into position to be acted upon in the succeeding advancing movement of the hammer j'aw 66. This completes the foldand presses it and then, by Iit-s transverse movement together with the lower jaw 67,

55. The machine is then set in operation,l

feeds the work 'forwardly another step.v 90

This continues until the short curve of the throat is reached. At that point the operator throws thesnipping blade 120 into operatie-n so that while folding the throat the Having `fully described my` invention, 1

claim as new and desire to secure by Letters Patent of the United States:

1. A folding machine having, in combination, a frame with an outwardly projecting army provided with a stationary work s'upportlng portion, folding instru- .me-ntalities mounted on'the end of the arm, and actuating mechanism therefor connected within the arm to said folding in- Y e strumentalities.

2. A folding machine having, in combination, a frame having an outwardly pro'- jecting arm provided with a stationary work supporting portion'of small cross section adapted to enter the opening of a closed vamp, folding instrulncntalities mounted adjacentto the end of thearrun, actuating mechanism within the frame, and connections between the. actuating mechanism and -the folding instrumentalities located within the arm. i

work is snipped at points just aheadl of those 8. A folding machine having, in combination, a frame constructed to rest upon av bench 4and having a single arm of small cross section projecting from one side at a point above the bench greater than the length of a vamp, said arm extending free and clear of all parts of the frame in order that a closed vamp may be passed around it without dragging upon the bench, and edge folding and feeding mechanism mounted adjacent to the end of the arm.

4. Ay folding machine 'having,'in .combination, a frame having a substantially vertical wall and a narrow arm extending outwardly at substantially right angles to said wall and being so positioned as to support al vamp with. its depending portion above the plane of the base of the frame said arm being clear and free on all sides to permit the passage of a closed vamp, and coperating folding devices dis osed adjacent to the outer end of said arm.

5. A folding machine having,` in combination, a frame carryingan outwardly extending arm at' a point substantially above its base, actuating mechanism withinl the frame, folding mechanism mounted upon the arm, and connecting mechanism within the arm.

`6. A folding machine having, in combination, a frame provided with a cylindrical supporting arm, there being a free and unobstructed space on all sides of saidl arm to permit a closed vamp to be turned about it, folding mechanism carried by said arm, a power shaft carried b said frame, and' connections from said olding mechanism to said shaft, said connections being i closed by said arm and thereby lprevented from Contact with said vamp.

7. A folding machine having, in combination, fold forming mechanism, means for actuating said mechanism, a pair of jaws adapted to press the fold andto feed the stock, a pivot connectingv said jaws, two shafts having coinciding axes connectedv respectively to said jaws, and means for operating said shafts.

8. A folding machine having, in combination, fold forming mechanism, means for actuatmg said mechanism, a palr of jaws between which the fold is gripped, a pivot connecting said jaws, a shaft connected to one jaw, means for moving said shaft longitudinally lto cause relative approach of said jaws to grip the fold, a hollow shaft surrounding said first named shaft and connected to the other jaw, and means for moving saidhollow shaft angularly to cause the jaws to feed the stock.

9. A folding machine having, in combination, a frame provided with'an outwardly.

projecting arm, a driving shaft located in the base ofthe frame, folding instrumentalities including a folder, a presser and la knife mounted upon said arm, actuating members connected respectively with said folder, presser and knife, said members extending through said arm into the upper part of said frame, and means for operating said members from said driving shaft.

10.v A folding machine having, in combi- 'said stirrup member and rocker arm, means for operating said rocker arm' and thereby moving said rod longitudinally, and means for moving said hollow shaft angularly. 11. A folding machine having, in combination, coperating folding devices, feeding jaws arranged te oscillate about a common axis Ywith the work in a path adjacent to saiddevices, and means ldisposed at the axis of oscillation of the jaws for relatively moving them toward and from the work.

In testimony whereof I have signed my name to this specification in the presenceof two. subscribing witnesses. j PERLEY R. GLASS. Witnesses:

MARTHA W. COUPE, HARLow M.- Davis. 

